Gamma Undecalactone
Aroma Chemical Heart Note CAS 104-67-6
A creamy lactonic peach note with ripe apricot and soft fruity facets. Warm and tenacious, it is a classic building block for peach and heavy fruity florals.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Fruity |
| Descriptor 2 | Oily |
| Descriptor 3 | Peach |
| Odor Impact1 | 360 |
| Impact Level | Medium |
| Tenacity1 | 45 h |
| Tenacity2 | 338 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Both tenacity figures are blotter life. The two labs use different evaluation protocols, so the numbers are not directly comparable — read them as two independent readings, not as a contradiction.
Identification
| CAS Number | 104-67-6 |
| INCI Name | Gamma-undecalactone |
| Category | Aroma Chemical |
| Formula | C11H20O2 |
| Mol. Weight | 184.27 |
| IUPAC Name | 5-heptyloxolan-2-one |
| InChIKey | PHXATPHONSXBIL-UHFFFAOYSA-N |
Synonyms
Aldehyde C14, gamma-Undecalactone, Aldehyde C14 (gamma-Undecalactone), Undecanoic acid, 4-hydroxy-, lactone, Aldehyde C-14 (so-called), Abriceine, Peach aldehyde, Peche, Aldehyde c-14 gamma undecalactone, aldehyde (C-14), aldehyde C-14, aldehyde C-14 (gamma-undecalactone), aldehyde C-14 (gamma-undecalactone) natural, aldehyde C-14 extra, aldehyde C-14 FCC, aldehyde C-14 natural, aldehyde C-14 natural (undecalactone gamma), aldehyde C-14, natural, aldehyde C14 so-called, C-14 aldehyde, dihydro-5-heptyl-2(3H)-furanone, 2(3H)-furanone, 5-heptyldihydro-, 1,4-hendecanolide, hendecylene methyl lactone, 4-heptyl butan-4-olide, gamma-heptyl butyrolactone, gamma-N-heptyl butyrolactone, 5-heptyl dihydro-2(3H)-furanone, 4-heptyl-4-hydroxybutanoic acid lactone, 4-N-heptyl-4-hydroxybutanoic acid lactone, gamma-heptyl-gamma-butyrolactone, 4-heptylbutan-4-olide, 5-heptyldihydro-2(3H)-furanone, 5-heptyldihydrofuran-2(3H)-one, 5-heptyloxolan-2-one, 4-hydroxyundecanoic acid gamma-lactone, 4-hydroxyundecanoic acid lactone, peach lactone, Undecalactone, gamma
Physical and chemical data
| Boiling Point | 297 °C |
| Flash Point | 93.33 °C |
| Density | 0.942 |
| Refractive Index | 1.448 |
| Vapor Pressure | 0.003000 mmHg @ 25.00 C. (est) |
| LogP | 3.3 |
| Solubility | soluble in alcohol, most fixed oils and propylene glycol; insoluble in glycerol and in water |
| Appearance | Dry Powder; Liquid; Liquid; CBI; Other Solid |
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.